Monographs Details: Inula
Authority: Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
Description:Genus Description - Heads radiate, yellow, the rays pistillate; invol hemispheric or campanulate, its bracts imbricate in several series, the inner commonly narrow and scarious, the outer more herbaceous and often broader; receptacle flat or convex, naked; disk-fls tubular and perfect; anthers sagittate-tailed; style-branches flattened, externally slightly papillate distally, with well developed ventromarginal stigmatic lines extending all the way around the rounded tip; achenes subterete or ± prominently 4–5 ribbed or angled; pappus a single series of few to numerous capillary bristles, sometimes connate at base; ± hairy or glandular herbs with alternate or basal, simple lvs. 200, Old World.